One machine is two -purpose. In the status of CFA construction method, the maximum pore diameter φ800mm, the maximum drill depth of 20m; after replacement of the working device, enter the routine rotation diamond shape, the maximum pore diameter φ1800mm, the maximum drill depth of 60m; Pollution; not only simplifying drilling equipment and technology, but also conducive to environmental protection; · high power head torque, strong drilling ability, high hole efficiency; high strength, high rigidity, good sealing performance; Reduce the intensity of labor labor; ·